RCA 21CT55 #8802897 is Dead

[Pete Deksnis]

Originally Posted by Tomcomm

My only “experiment” with the CTC2B’s power supply was the replacement of the big selenium rectifiers with small silicon power diodes. ... How many members performed this same “experiment” on their sets??

Sorry to hear about your fly problem Tom. Does that mean your quest to engineer an S-video input to a CTC2B is on hold? ;-)

As to your question, yes, I replaced selenium with silicon in my operational CTC2 chassis, w/o a compensating resistance added, since in NJ where I lived at the time the line rarely went over 115 and was usually much lower (115 is the AC input spec for the CTC2). That chassis is now/still at ETF driving the rebuilt 15GP22 demo there, and since the line at ETF was nicely above 115, I added a 50-ft. extension to the power cord, which conveniently drops the line to around 115.

Pete